diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
index 42432d7e7a2..3a36a1aaff1 100644
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -24,4 +24,4 @@ Describe what you expect the output to be. Knowing the correct behavior is also
 Provide any additional information here.
 
 #### Current Version:
-v2.19.0
+v2.19.1
diff --git a/RELEASE-NOTES.txt b/RELEASE-NOTES.txt
index 7cb58588d55..1b65fa2c66f 100644
--- a/RELEASE-NOTES.txt
+++ b/RELEASE-NOTES.txt
@@ -5,6 +5,16 @@ Note: these are the release notes for the stan-dev/stan repository.
 Further changes may arise at the interface level (stan-dev/{rstan,
 pystan, cmdstan}) and math library level (stan-dev/math).
 
+v.2.19.1 (18 Apr 2019)
+======================================================================
+
+This is a release out of cycle to address a performance bug in v.2.19 (stan-dev/stan#2748)
+
+Bug Fixes
+--------------------------------------------------
+* #2749 - Fixed generator so that matrix indexing uses most efficient access strategy - generated code should call stan::math::get_base1() on matrix using 5-arg function which specifies matrix row, column.
+
+
 v.2.19.0 (20 March 2019)
 ======================================================================
 Stan now comes with GPU support for certain functions; see the Math library
diff --git a/src/doxygen/doxygen.cfg b/src/doxygen/doxygen.cfg
index d65192e9075..e32b545ed01 100644
--- a/src/doxygen/doxygen.cfg
+++ b/src/doxygen/doxygen.cfg
@@ -38,7 +38,7 @@ PROJECT_NAME           = "Stan"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2.19.0
+PROJECT_NUMBER         = 2.19.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/src/stan/version.hpp b/src/stan/version.hpp
index 2f71f950a90..5d0c2070391 100644
--- a/src/stan/version.hpp
+++ b/src/stan/version.hpp
@@ -13,7 +13,7 @@
 
 #define STAN_MAJOR 2
 #define STAN_MINOR 19
-#define STAN_PATCH 0
+#define STAN_PATCH 1
 
 namespace stan {
 
diff --git a/src/test/unit/version_test.cpp b/src/test/unit/version_test.cpp
index 267176df775..efe23510796 100644
--- a/src/test/unit/version_test.cpp
+++ b/src/test/unit/version_test.cpp
@@ -4,11 +4,11 @@
 TEST(Stan, macro) {
   EXPECT_EQ(2, STAN_MAJOR);
   EXPECT_EQ(19, STAN_MINOR);
-  EXPECT_EQ(0, STAN_PATCH);
+  EXPECT_EQ(1, STAN_PATCH);
 }
 
 TEST(Stan, version) {
   EXPECT_EQ("2", stan::MAJOR_VERSION);
   EXPECT_EQ("19", stan::MINOR_VERSION);
-  EXPECT_EQ("0", stan::PATCH_VERSION);
+  EXPECT_EQ("1", stan::PATCH_VERSION);
 }